Hekry van hoevestjebgh



(No Model.)

H. VAN HOEVENBERGH.

BLEOTRO MECHANICAL MOVEMENT. No. 293,923. Patented Feb. 19,1884.

M I I I I YPWJ MM WHFI I I 7E: Pwwllll. a W M w e A w M w i W u r I. m mE /W M WN N k y B WITNESSES m 'r -1 PATENT nitrite.

HENRY VAN HOEVENEERGH, OF ELIZABETH, NEW JERSEY.

ELECTRO- MECHANi CAL WGVEM' SPECIFICATION forming part of Letters PatentNo. 293,923, dated February 19, 1884. Application filed April 30, 1883.(No model.)

To (ILZZ whom it nmy concern.-

Be it known that I, HENRY VAN Honvnu BERGH, a citizen of the UnitedStates, and a resident of Elizabeth, in the county of Union and State ofNew Jersey, haveinvented certain new and useful Improvements inElectro-Mechanical Movements, of which the following is a specification.

My invention relates to certain improvements in the construction ofapparatus, and in the organization of electric circuits for actuatingelectromagnetic motors.

The invention is chiefly applicable to the class of electricmotorsemployed in printingtelegraph systems for rotating thetype-wheels of thereceiving-instruments.

The object of the invention is to provide means for actuating the motorin either of two directions, and arresting its movement as re quired forplacing any particular type in a predetermined position.

The invention consists in combining with aseries of line-conductors andapparatus for transmitting electric currents or impulses upon them insuccession a series of electro-magnets, respectively, included in thecircuit of those conductors. These electro-magnets are provided witharmature-levers carrying pawls, which engage the teeth of a star-wheel,causing it to rotate in one direction or the other, according to theorder of succession in which the electro-magnets are vitalized. Theteeth of the wheel are preferably beveled at the same angle upon eachside. The pawls or pallets at the extremities of the armature-leversconform in outline to the spaces intervening between two adjacent teeth.These pallets, by being successively pressed against the periphery ofthe wheehact to move the wheel, in one direction or the other, in such amanner to bring the re-entering angle or the point midway between twoadjacent teeth into the same radial line with the face or salient angleof the pallet, which thus engages the wheel.

The accompanying drawing is a diagram illustrating my invention asapplied to a printing-telegraph system.

Referring to this drawing, A and B, respectively, designate thetransmitting and a receiving station of a telegraph system, and L L Lthree electric conductors uniting the same.

At the transmitting-station A is placed a battery, E, having one polesaythe negativeconnected with the earth at G by conductor 1, and thepositive pole with thetransmitting device K by means of a conductor, 2.The transmitting deviceKis arranged to transmit electric impulses fromthe battery E upon the conductors L in succession, either in the order LL If or in the order L L L in a man ner well understood.

At the receiving-station B are provided three electro-niagnets, h DP M,respectively, included in the conductors L L U. After traversing thecoils of these electro-magnets, the conductors L L L are united at apoint, 3, with a conductor, 1, which is connected with the earth at G.

The electromagnets M are each provided with an armature, m, and anarmature-lever, N. These arinatures and their levers are norinally heldaway from the poles of their electro-inagnets by suitable retractilesprings, s. XVhen, however, any one of the electro-magnets is vitalizedby a current transmit-ted from the station A, the armature-lever will bedrawn into a forward position, thereby causing apallet, 0, mounted atthe extremitythercof, to impinge against a tooth of a star-wheel, P,carried upon an arbor, t. The teeth 1) of the wheel P are beveled at thesame angle upon their opposite faces. The pallets o,which engage theseteeth, are constructed in the same manner, and their faces form asalient angle approximately equal to the re-entering angle between twoadjacent teeth, 1), and they are of the properproportions to nearly fillthe spaces between the adjacent teeth. The relative positions of thepallets o are such that no 'two pallets can be in a position midwaybetween two consecutive teeth at the same timethat is to say, if onepallet, for instance, 0, is midway between two of the teeth 1) and f,neither the pallet 0" nor 0 should be in asimilar position withreference to any of the remaining teeth. The three pallets are for thispurpose so arranged that if all the electromagnets were simultaneouslyvitalized the three pallets would impinge upon the respective teeth 1).of the wheel P at three different relative points. Thus if the salientangle of the pallet 0 were to coincide with a re-entering angle of thestar-wheel P the pallet would engage a tooth,

19 for example, at a point intermediate between its base and edge uponone side, and the pallet 0 would impinge upon the opposite side of a 5tooth,'p The relative points thus engaged would be separatedapproximately one-third the width of a single tooth.

A type-wheel, T, or other device may be mounted upon the arbort of thewheel P and revolved in one direction or the other, according to thedirection of motion imparted to the wheel.

The operation is as follows: Considering the electric impulses to betransmitted from the I 5 battery E upon the conductors L in thesuccession of L, L and L the electro-magnet-s M, M, and M will besuccessively vitalized. NVhen the electro magnet M is vitalized itspallet 0" will be forced between two adjacent teeth, 19 12, causing thewheel P to assume the position indicated in the drawing. Theelectro-magnet llI being next vitalized and the electro-magnet Mdemagnetized, the pallet 0 will be caused to impinge upon the right-handface of its adjacent tooth p and effect a movement of the wheel P in thedirection indicated by the arrow :10, thereby bringing the point whichis midway between the teeth 19 and p into the same radial line as thatassumed by the extremity of the pallet o". The electromagnet M beingthen demagnetized the pallet 0 is withdrawn, and the pallet 0 nextengages the tooth 12 by virtue of the attraction exerted by theelectro-magnet M". This pallet causes the wheel P to be advanced througha distance equal to one-third the width of the tooth in the same manneras that already described with reference to the pallet 0 By repeatingthe electric impulsesupon the lines L, U, and L the wheel P may berevolved so long as re quired.

It is evident that by reversing the order in which the electro-magnetsare vitalized the direction of motion of the wheel P may be reversed.

In the drawing I have represented the typewheel as bearing thirty-sixcharacters and the star-wheel P as having twelve teeth, such proportionbeing conveniently employed for the purpose of advancing the type-wh eelone character for each impulse transmitted; and it is evident that suchresult will be effected from the fact that the star-wheel P is advancedby each impulse through one-third of the distance occupied by any one ofthe teeth.

I claim as my invention- 1. The combination, substantially ashereinbefore set forth, of a battery, a series of electric conductors,means for completing the cir-. cuit of said battery through each of saidconductors in succession, and a series of electromagnets, one includedin the circuit of each of said conductors, an armature and armatureleverapplied to each of said electr c-magnets,

a double-faced pawl or pallet carried at the extremity of saidarmature-levers, and a wheel having a series of beveled-teeth againstwhich said pallets are successively caused to impinge.

2. The combination, substantially as here inbefore set forth, of astanwheel, a series of electro magnets, means for vitalizing saidelectro-magnets in succession, and a series of pallets successivelyengaging the teeth of said star-wheel, thereby causing the same to berevolved in one direction or the other, accord- 7 5' ing to the-order ofsuccession in which said electro-magnets are vitalized.

3. The combination, substantially as hereinbefore set forth, of astar-wheel, a series of pallets, and a series of electro-magnets forcausing each of said pallets to engage the teeth of said star-wheel insuccession, thereby advancing the same in one direction or the otherthrough a predetermined distance.

In testimony whereof I have hereunto subscribed my name this 25th day ofApril, A. D. 1883.

HENRY VAN HOEVENBERGH.

Witnesses:

DANIEL W. EDGEOOMB, CHARLES A. TERRY.

